/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineOutputBase.h
This is called when a shot ends, right after the last frame is rendered.
void OnShotFinished ( const [UMoviePipelineExecutorShot](API\Plugins\MovieRenderPipelineCore\UMoviePipelineExecutorShot) * InShot, const bool bFlushToDisk )